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JEE Advanced 2018Paper 1
Exam
JEE Advanced
Year
2018
Paper
Paper 1
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JEE Advanced 2018 · Paper 1 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

The compound(s) which generate(s) N _ 2 gas upon thermal...

The compound(s) which generate(s) N2{N}_{2} gas upon thermal decomposition below 300oC{300}^{o}C is (are)The compound(s) which generate(s) N _ 2 gas upon thermal decomposition below 300 ^ o C is (are)

Options

  1. ANH4NO3N{H}_{4}N{O}_{3}
  2. B(NH4)2Cr2O7{{\left(N{H}_{4}\right)}_{2}}_{}C{r}_{2}{O}_{7}
  3. CBa{\left({N}_{3}\right)}_{2}
  4. DMg3N2M{g}_{3}{N}_{2}

Correct answer

B. (NH4)2Cr2O7{{\left(N{H}_{4}\right)}_{2}}_{}C{r}_{2}{O}_{7}

Step-by-step solution

(A)( A )
The compound(s) which generate(s) N _ 2 gas upon thermal decomposition below 300 ^ o C is (are)
(B)(NH4)2Cr2O7→∆N2+Cr2O3+4H2O\left(B\right) {\left(N{H}_{4}\right)}_{2}C{r}_{2}{O}_{7}\overset{∆}{\to}{N}_{2} + C{r}_{2}{O}_{3} + 4{H}_{2}O
(C)Ba(N3)2→∆Ba+3N2( C ) Ba{\left({N}_{3}\right)}_{2}\overset{∆}{\to}Ba + 3{N}_{2}
(D)Mg3N2( D ) M{g}_{3}{N}_{2} (It does not decompose into N2)
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